Diestostemma

A large, dorsolaterally white and ventrally realgar colored (red arsenic) Diestostemma, with two pronotal humps and small dark areas on the forewing. Total length 18.3–22.3 mm. Crown with mesal anterior margin convex, with small rounded process at insertion of nymphal blade-like frontal process in female; maximum length 0.52–0.9 transocular distance. Frons with deep muscle impressions laterally and median longitudinal depression or planar medially, dorsal surface convex or planar. Clypeus anterior margin at level of profile of frons in lateral view. Pronotum maximum width at posterolateral angles 1.1–1.2 times wider than transocular distance; maximum length (at level of humps) 1.5–1.6 times longer than crown length; lateral lobe punctured or not, with median ridge, posterior margin projected into short thumb-like or long forefinger-like process. Forewing with two or three sclerotized dark vein areas (SDV): small rounded basal spot(s) and large H-shaped or imperfect H-shaped marking at anterior 0.25; venation sclerotized and moderately elevated at posterior 0.5 of corium, reticulate. Metathoracic leg with femoral chaetotaxy variable, setal formula 2:1:0:0, 2:0:1:0, etc.; tibia with anteroventral row of flattened setae along entire length, posteroventral row dimorphic. Abdomen largely realgar colored or yellowish-brown. Female sternite VII posterior margin sinuous, with three convex lobes, mesal lobe strongly or poorly projected.

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